A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
In A1 on the Consolidate sheet:
=TEXTJOIN(", ", TRUE, IF(Red!A1="Y", "Red", ""), IF(White!A1="Y", "White", ""), IF(Blue!A1="Y", "Blue", ""), IF(Green!A1="Y", "Green", ""))